Dr Arun Sharma

India is facing a silent but rapidly growing epidemic – obesity and lifestyle-related diseases. Once considered a problem of the West, excess weight is now affecting millions across Indian cities and even smaller towns. Alongside it comes a sharp rise in type 2 diabetes, high blood pressure, Obstructive Sleep Apnea (OSA), fatty liver disease and heart disease – conditions that Indians are genetically more vulnerable to, even at lower body weights.
Until recently, patients with severe obesity had limited options beyond lifestyle changes and bariatric surgery. Today, a new class of injectable medications – such as Semaglutide (sold internationally as Ozempic and Wegovy) and Tirzepatide (sold as Mounjaro and Zepbound) – is changing the conversation around weight loss. With these drugs producing dramatic results, many Indians are asking: Do we still need bariatric surgery, or can injections replace it?

World Obesity Day

The answer is not so simple.
India’s Unique Metabolic Challenge
Indians develop diabetes and heart disease at lower body mass index (BMI) levels compared to Western populations. A BMI of 27 or 28 in an Indian patient may carry metabolic risks similar to a BMI of 32 or 33 in Western populations. This means weight-related health problems often appear earlier and progress faster. As a result, effective and timely intervention becomes even more important.
The Rise of Weight-Loss Injections
The new medications belong to a group known as incretin-based therapies. They mimic gut hormones that regulate appetite and blood sugar. Patients using these weekly injections often report: Reduced hunger, Early fullness, Smaller portion sizes & Better blood sugar control.
Clinical studies have shown average weight loss of about 15 percent with semaglutide and up to 20 percent with tirzepatide in some cases. For an Indian weighing 100 kg, this could mean losing 15 to 20 kgs over several months under medical supervision. For many people who fear surgery or want a non-invasive option, this feels like a breakthrough. However, there are practical considerations in India. These injections can be expensive and are not universally covered by insurance. Long-term affordability becomes an important factor.
Metabolic & Bariatric Surgery: Still the Gold Standard for Severe Obesity
Bariatric surgery has been performed in India for over two decades, with highly experienced centres in major cities. Procedures such as sleeve gastrectomy and gastric bypass reduce the size of the stomach and alter gut hormones that control hunger and metabolism. Typical weight loss ranges from 25 to 35 percent of total body weight. In addition, surgery has shown remarkable benefits in Indian patients with type 2 diabetes – often leading to significant improvement or even remission. Given India’s high diabetes burden, this benefit cannot be overstated. Modern bariatric surgery is considered safe when performed by trained experts, with complication rates comparable to other common abdominal surgeries such as Laparoscopic Gall bladder removal. However, it does require a short 2-3 days hospitalisation, recovery time and lifelong nutritional monitoring. One additional factor in favour of Bariatric Surgery is that it is covered under insurance at a BMI cut-off point of 40 or more or a BMI of > 35, if associated with Diabetes, OSA or Heart disease.
The Key Question: What Happens Long Term?
One major difference between medications and surgery is durability. Weight-loss injections work very well – but generally only while they are being taken. Studies show that stopping the drug often leads to weight regain, as the body’s natural hunger mechanisms return. Surgery produces permanent anatomical changes. While some weight regain can occur over the years, the results are typically more sustained without the need for ongoing injections. For Indian patients concerned about lifelong medication costs, this becomes an important discussion.
Safety and Side Effects
GLP-1 and GIP injections commonly cause nausea, vomiting or digestive discomfort in the initial weeks. These symptoms usually settle with time and dose adjustments. Other rare but serious side effects include Pancreatitis, Gall stones, Stomach Paralysis, Kidney damage, Thyroid cancer, Suicidal thoughts and a potential risk of Eye-stroke or blindness in patients with Diabetes.
Surgery carries the usual risks associated with any operation, including infection, bleeding and anastomotic leak, though serious complications are uncommon in experienced hands. Patients must also commit to lifelong protein & vitamin supplementation to prevent deficiencies.
Both treatments require medical supervision. Neither is a “quick fix.”
Who Should Consider What?
In the Indian context, patient selection is critical. Weight-loss injections may be suitable for: Patients with mild to moderate obesity; Those who prefer to avoid surgery; Individuals with early diabetes; Patients unfit for surgery
Metabolic & Bariatric surgery may be more appropriate for:
Patients with severe obesity; Individuals with long-standing diabetes; Those needing substantial and sustained weight loss; Patients who have not responded adequately to medications
It is important to remember that obesity is a chronic disease influenced by genetics, hormones and environment – not simply lack of discipline.
Competition or Complement?
At first glance, the rise of these medications seems to challenge the role of surgery. Some patients who would previously have opted for bariatric surgery are now choosing injections first. However, many Indian metabolic specialists see them as complementary tools. Some patients may use medications before surgery to reduce weight and improve blood sugar, making surgery safer. Others may undergo surgery and later use medications if weight regain occurs. In some cases, patients may start with injections and proceed to surgery if their health goals are not fully achieved. Rather than replacing surgery, these medications are expanding the treatment spectrum.
Cost and Accessibility in India
Affordability remains a significant factor. Long-term injection therapy can be costly. Surgery, while involving upfront expense, may prove more economical over years if it reduces medication dependency and hospital visits related to diabetes or heart disease.
The Bigger Picture
The emergence of effective weight-loss medications has brought renewed attention to obesity as a medical condition. It has also reduced stigma by reinforcing the understanding that weight regulation is largely biological.
Whether through injections, surgery, or a combination of both, treatment should aim at preventing long-term complications such as heart disease, kidney failure and stroke – conditions that place heavy burdens on Indian households.
The Bottom Line
Weight-loss injections have transformed obesity care and offer hope to millions who previously struggled without effective options. Bariatric surgery remains the most powerful and durable intervention for severe obesity and diabetes – especially relevant in a country like India, where metabolic diseases develop early and aggressively. The real question is not which treatment is superior, but which is most suitable for each individual patient.
In India’s battle against obesity and diabetes, the future likely lies not in choosing between medicines and surgery – but in using both wisely, based on medical need, affordability and long-term health goals.

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